Noncorrosive insert seat



March 19, 1940. H. ALLEN NONCORROS'IVE INSERT SEAT Filed July 2, 1937 2 Sheets-Sheet 1 I'IE L ATTORNEYS.

Mud-119, 1940. ALLE 2,194,266

NONCORROSIVE INSERT SEAT Filed July 2, 19157 2 Sheets-Sheet 2 lNV EKIg BY ammy? ATTORN EYS.

HERBERT A LLEN.

Patented Mar. 19, 1940 UNITED STATES 2,194,266 noncoanoslvu msEa'r SEAT Herbert Allen, Houston, Tex., assignor to Cameron Iron Works, a corporation Application July 2, 1937, Serial No. 151,659

1 Claim.

The invention relates to a noncorrosive seat for flanged connections.

It has been found that flanged connections for pipes, valves and couplings are more satisfactory where high pressures are to be controlled and further that couplings or connections having an insert seal ring are most satisfactory. In practice particularly in the oil fields where corrosive and abrasive materials are present and where the valves, pipes and couplings are connected anddisconnected periodically, it has been found that flanged ends having grooved seats soon become corroded or damaged due to handling and exposure. In many instances the valves or 5, flanged ends are permitted to. remain exposed to the elements or are stored they are subjected tdcorrosion. When they are then next to be used it has been found that the seats are so corroded that a seal can not be obtained and it is then necessary to either machine a new seat in the flanged connection or to discard the piece of equipment-entirely.

Of course, it is impractical to form the entire flanged member of a noncorrosive material due a to the cost thereof and the present invention has therefore been devised with a view of providing a noncorrosive insert type of seat for flanged connections by removing a portion of the end face of the flange and depositing a band or ring -13 of noncorrosive metal in this cut away groove and to thereafter form the ring seat in this band of material so that an integralnoncorrosive seat provided in the flanged end. 7 Another object of the invention is to provide an integral noncorr'osive material seat upon a body of ferrous metal.

Still another object of the invention is to provide a noncorrosive ring and seat construction for flanged ends so that a seal may be obtained even though the coupling is connected and reconnected.

Other and further objects of the invention will be readily apparent when the following description is considered in connection with the ac- 35, companying drawings wherein;

Fig. 1 is aside elevation of a valveand pipe connection wherein certain parts are shown in section to illustrate the invention.

Fig. 2 is an end view of one of the flange faces 50 showing the insert seat;

Fig. 3 is a section taken on the line, 3-3 of Fig. 2. g

In Fig, 1 a valve is illustrated at 2 which is provided with the end flanges 3 and l. This as valve may be of any desired type, size or configuration or it may be illustrative of any mem-- ber having a flanged end such as 3 or 4, which is to be in turn connected to the flanged end 5 on another member 6, which may be a section of pipe. A threaded connection 7 is shown between the flanged end 5 and the pipe 6.

For purposes of illustration the flange 5 is shown enlarged in Fig. 3 and has a plurality of openings ii) therethrough which are to receive the bolts it so that the flanges t and 5 may be 0 connected together by the bolts E2.

The end face it of the flange is illustrative of the end face of any flange to which the invention may be applied and, as seen in Fig. 3, this end face has been cut away to form an enlarged in groove it. This groove may-be of any shape, size or configuration so long as it is arranged to receive a band or body of material ll, which is preferably of noncorrosive type. Such material may be brass, copper, stainless steel or any suitable alloy, and it may be brazed, rolled or welded in position so long as a bond is provided between the face id of the non-corrosive band il and the face as of the groove it, it being imperative that a bond be formed by these two adjacent faces so 535 that there can be absolutely no possibility of leakage between the flange 55 and the ring or band il After this band has been deposited at suitable ring seat 28 may be machined or otherwise formed therein. go

In Fig. l the coupling-or connection is shown as assembled with the seal ring disposed in the opposed ring seats 2H3, one of which has been formed in each of the flanges l and '5. This sealing ring 25 is in the form of an annular ring whose opposite edges have been beveled at 26 on each side so as to form a tapered edged ring. When the bolts it are drawn up tightly of course the ring 25 is clamped in the ring seats 20 and in this manner a seal is obtained. 40

When the coupling is connected and disco-nnected it may be exposed to the weather without any damaging'results to the seat member, whereas if the seat is of corrosive material and becomes corroded due to exposure, then, of course; the sealing ring will not form a perfect seal therewith when it is re-connected and resultant leakage'and damage has occurred in many instances. Such a leaking connection is particularly hazardous upon oil and gas wells where pressure of four and five thousand pounds per square inch are encountered and must be controlled.

Broadly the invention contemplates a means and method of providing a simple and economical noncorrosive seat for ferrous material flanges. member, and means for preventing deterioration What is claimed is: of said groove by corrosion comprising, a lining In a valve casing, or'pipe connection for of noncorrodible material bonded to the walls flanged end connections wherein each end has a of said groove. 5 circular flat face and an annular groove in the HERBERT ALLEN material of each face adapted to receive a seal 

